1, Compact design, fit cormfortably on patient's wrist 2, Long time monitoring 3, CE standard Feature Compact design, ... fit cormfortably on patient's wrist For spot checking and long time monitoring 256k color OLED ... 69%,unspecified Alarm Range:0~100%(merely applied to pulse oximeter with alarm function)Pulse Rate Measurement Range:25~250bpm Resolution:1bpm Accuracy ...